The chairman of the House Judiciary Committee claims he obtained a “smoking gun” email that proves the Obama Justice Department prevented settlement payouts from going to conservative-leaning organizations, even as liberal groups were awarded money and DOJ officials denied “picking and choosing” recipients.

“It is not every day in congressional investigations that we find a smoking gun,” Rep. Bob Goodlatte, R-Va., said Tuesday. “Here, we have it.”

While Eric Holder was U.S. attorney general, the Justice Department allowed prosecutors to strike agreements compelling big companies to give money to outside groups not connected to their cases to meet settlement burdens. Republican lawmakers long have decried those payments as a “slush fund” that boosted liberal groups, and the Trump DOJ ended the practice earlier this year.

But internal Justice Department emails released Tuesday by Goodlatte indicated that not only were officials involved in determining what organizations would get the money, but also Justice Department officials may have intervened to make sure the settlements didn’t go to conservative groups.

In one such email in July 2014, a senior Justice Department official expressed “concerns” about what groups would receive settlement money from Citigroup — saying they didn’t want money going to a group that does “conservative property-rights legal services.”

“Concerns include: a) not allowing Citi to pick a statewide intermediary like the Pacific Legal Foundation (does conservative property-rights legal services),” the official, whose name is redacted in the email, wrote under the title of “Acting Senior Counselor for Access to Justice.”

The official added that “we are more likely to get the right result from a state bar association affiliated entity.”

The Pacific Legal Foundation responded to the email release Tuesday by telling Fox News it believes “permanent reforms to prevent such abuse are needed.”

“We are flattered that the previous administration would be concerned enough about our success vindicating individual liberty and property rights to prevent settlement funds from making their way to Pacific Legal Foundation,” PLF CEO Steven D. Anderson said in a statement.